config: Add <rtems/confdefs/initthread.h>

Remove all comments and copyrightable content from the moved content.
Use BSD-2-Clause license for new file.

Update #3053.
Update #3875.

3 files changed, 100 insertions, 56 deletions

diff --git a/cpukit/headers.am b/cpukit/headers.am
index ae235a3f32..7a9cf1adae 100644
--- a/cpukit/headers.am
+++ b/cpukit/headers.am
@@ -188,6 +188,7 @@ include_rtems_confdefs_HEADERS += include/rtems/confdefs/bsp.h
 include_rtems_confdefs_HEADERS += include/rtems/confdefs/clock.h
 include_rtems_confdefs_HEADERS += include/rtems/confdefs/extensions.h
 include_rtems_confdefs_HEADERS += include/rtems/confdefs/inittask.h
+include_rtems_confdefs_HEADERS += include/rtems/confdefs/initthread.h
 include_rtems_confdefs_HEADERS += include/rtems/confdefs/libio.h
 include_rtems_confdefs_HEADERS += include/rtems/confdefs/libpci.h
 include_rtems_confdefs_HEADERS += include/rtems/confdefs/malloc.h
diff --git a/cpukit/include/rtems/confdefs.h b/cpukit/include/rtems/confdefs.h
index d31c125f7e..4ae6580754 100644
--- a/cpukit/include/rtems/confdefs.h
+++ b/cpukit/include/rtems/confdefs.h
@@ -52,6 +52,7 @@
 #include <rtems/confdefs/clock.h>
 #include <rtems/confdefs/extensions.h>
 #include <rtems/confdefs/inittask.h>
+#include <rtems/confdefs/initthread.h>
 #include <rtems/confdefs/libio.h>
 #include <rtems/confdefs/libpci.h>
 #include <rtems/confdefs/malloc.h>
@@ -605,24 +606,6 @@ extern "C" {
   #define _CONFIGURE_MEMORY_FOR_POSIX_QUEUED_SIGNALS 0
 #endif
 
-#ifdef CONFIGURE_POSIX_INIT_THREAD_TABLE
-  #ifndef CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT
-    #define CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT   POSIX_Init
-  #endif
-
-  #ifndef CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
-    #define CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE \
-      CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
-  #endif
-#endif /* CONFIGURE_POSIX_INIT_THREAD_TABLE */
-
-/**
- * This configuration parameter specifies the stack size of the
- * POSIX API Initialization thread (if used).
- */
-#ifndef CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
-  #define CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE    0
-#endif
 /**@}*/  /* end of POSIX API Configuration */
 
 /**
@@ -701,30 +684,12 @@ extern "C" {
 )
 
 /*
- *  Now account for any extra memory that initialization tasks or threads
- *  may have requested.
- */
-
-/*
- * This accounts for any extra memory required by the POSIX API
- * Initialization Thread.
- */
-#if (CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE > \
-      CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE)
-  #define _CONFIGURE_INITIALIZATION_THREADS_STACKS_POSIX_PART \
-    (CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE - \
-      CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE)
-#else
-  #define _CONFIGURE_INITIALIZATION_THREADS_STACKS_POSIX_PART 0
-#endif
-
-/*
  * This macro provides a summation of the various initialization task
  * and thread stack requirements.
  */
 #define _CONFIGURE_INITIALIZATION_THREADS_EXTRA_STACKS \
     (_CONFIGURE_INIT_TASK_STACK_EXTRA + \
-    _CONFIGURE_INITIALIZATION_THREADS_STACKS_POSIX_PART)
+    _CONFIGURE_POSIX_INIT_THREAD_STACK_EXTRA)
 
 /*
  * This macro is calculated to specify the memory required for
@@ -1054,25 +1019,6 @@ extern "C" {
   #endif
 #endif
 
-/*
- *  If the user has configured a set of POSIX Initialization Threads,
- *  then we need to install the code that runs that loop.
- */
-#ifdef CONFIGURE_INIT
-  #if defined(CONFIGURE_POSIX_INIT_THREAD_TABLE)
-    const posix_initialization_threads_table _POSIX_Threads_User_thread_table = {
-      CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT,
-      CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
-    };
-
-    RTEMS_SYSINIT_ITEM(
-      _POSIX_Threads_Initialize_user_thread,
-      RTEMS_SYSINIT_POSIX_USER_THREADS,
-      RTEMS_SYSINIT_ORDER_MIDDLE
-    );
-  #endif
-#endif
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/cpukit/include/rtems/confdefs/initthread.h b/cpukit/include/rtems/confdefs/initthread.h
new file mode 100644
index 0000000000..6c993603a6
--- /dev/null
+++ b/cpukit/include/rtems/confdefs/initthread.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup RTEMSApplicationConfiguration
+ *
+ * @brief Evaluate POSIX Initialization Thread Configuration Options
+ *
+ * This header file defines _CONFIGURE_POSIX_INIT_THREAD_STACK_EXTRA for use by
+ * other configuration header files.
+ */
+
+/*
+ * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RTEMS_CONFDEFS_INITTHREAD_H
+#define _RTEMS_CONFDEFS_INITTHREAD_H
+
+#ifndef __CONFIGURATION_TEMPLATE_h
+#error "Do not include this file directly, use <rtems/confdefs.h> instead"
+#endif
+
+#ifdef CONFIGURE_INIT
+
+#ifdef CONFIGURE_POSIX_INIT_THREAD_TABLE
+
+#include <rtems/confdefs/percpu.h>
+#include <rtems/posix/pthread.h>
+#include <rtems/sysinit.h>
+
+#ifndef CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT
+  #define CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT POSIX_Init
+#endif
+
+#ifndef CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
+  #define CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE \
+    CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
+#endif
+
+#if CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE \
+  > CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE
+  #define _CONFIGURE_POSIX_INIT_THREAD_STACK_EXTRA \
+    ( CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE - \
+      CONFIGURE_MINIMUM_POSIX_THREAD_STACK_SIZE )
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+const posix_initialization_threads_table _POSIX_Threads_User_thread_table = {
+  CONFIGURE_POSIX_INIT_THREAD_ENTRY_POINT,
+  CONFIGURE_POSIX_INIT_THREAD_STACK_SIZE
+};
+
+RTEMS_SYSINIT_ITEM(
+  _POSIX_Threads_Initialize_user_thread,
+  RTEMS_SYSINIT_POSIX_USER_THREADS,
+  RTEMS_SYSINIT_ORDER_MIDDLE
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CONFIGURE_POSIX_INIT_THREAD_TABLE */
+
+#ifndef _CONFIGURE_POSIX_INIT_THREAD_STACK_EXTRA
+  #define _CONFIGURE_POSIX_INIT_THREAD_STACK_EXTRA 0
+#endif
+
+#endif /* CONFIGURE_INIT */
+
+#endif /* _RTEMS_CONFDEFS_INITTHREAD_H */